Nap-hook for sail-surfing boards



FIG. 1 is a side view of a snap-hook for sail-surfing boards, showing my new design;

FIG. 2 is a side view of the side opposite that shown in FIG. 1;

FIG. 3 is an edge view taken from the left of FIG. 1;

FIG. 4 is an edge view taken from the right of FIG. 1;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof. 

The ornamental design for a snap-hook for sail-surfing boards, as shown. 